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Author Topic: L6-20 250v to 15a edison (Labre)  (Read 12408 times)

Bradford "BJ" James

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L6-20 250v to 15a edison (Labre)
« on: September 26, 2016, 04:35:41 pm »

I have a DNA20k4 amp on it's way. It has a 32a powercon on the chassis with a L6-20 250v plug on the end. I'll need to occasionally use this with out a distro, and I'm unsure how to wire up a 15a 120v adaptor to this.
Am I correct that an L6-20 250v has 2 hots and a ground? No neutral? 
Thanks,
BJ
« Last Edit: December 23, 2016, 03:43:07 pm by Mike Sokol »
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Yoel Farkas

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Re: L6-20 250v to 15a edison
« Reply #1 on: September 26, 2016, 04:51:18 pm »

I have a DNA20k4 amp on it's way. It has a 32a powercon on the chassis with a L6-20 250v plug on the end. I'll need to occasionally use this with out a distro, and I'm unsure how to wire up a 15a 120v adaptor to this.
Am I correct that an L6-20 250v has 2 hots and a ground? No neutral? 
Thanks,
BJ
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Yoel Farkas
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TJ (Tom) Cornish

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Re: L6-20 250v to 15a edison
« Reply #2 on: September 26, 2016, 04:54:57 pm »

I have a DNA20k4 amp on it's way. It has a 32a powercon on the chassis with a L6-20 250v plug on the end. I'll need to occasionally use this with out a distro, and I'm unsure how to wire up a 15a 120v adaptor to this.
Am I correct that an L6-20 250v has 2 hots and a ground? No neutral? 
Thanks,
BJ
Being clear here, you're trying to allow your amp to be powered from a standard Edison receptacle, so you're making a NEMA 5-15P to NEMA L6-20R adapter.  Normally adapters like these are spoken of in order of signal flow, so what you mentioned would be the reverse - trying to get 120v out of an L6-20 receptacle - something that isn't safely possible.  The adapter you're wanting doesn't pose a safety issue (assuming your amp is happy at 120v) and is wired per Yoel's diagram.
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Bradford "BJ" James

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Re: L6-20 250v to 15a edison
« Reply #3 on: September 26, 2016, 04:59:30 pm »

Thanks Yoel and TJ,
TJ, you're correct in what I'm trying to explain. The diagram Yoel attached is what I would expect for a 120v L6-20. I assumed that a 240v would have 2 hots, thus my confusion.
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Yoel Farkas

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Re: L6-20 250v to 15a edison
« Reply #4 on: September 26, 2016, 05:24:38 pm »

Thanks Yoel and TJ,
TJ, you're correct in what I'm trying to explain. The diagram Yoel attached is what I would expect for a 120v L6-20. I assumed that a 240v would have 2 hots, thus my confusion.

i also have the DNA20k4. i use it mostly with 220V. i have made an adapter that takes the 2 hots of the L6-20 to 2 Edison so i can get 220V from 2 20a 120V lines. i know it sounds crazy.
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Yoel Farkas
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TJ (Tom) Cornish

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Re: L6-20 250v to 15a edison
« Reply #5 on: September 26, 2016, 05:26:22 pm »

Thanks Yoel and TJ,
TJ, you're correct in what I'm trying to explain. The diagram Yoel attached is what I would expect for a 120v L6-20. I assumed that a 240v would have 2 hots, thus my confusion.
A 240v receptacle does have two hots.  The L6 series has 2 hots and a ground.  The 14/L14 series has 2 hots, one neutral, and one ground.  Normally hots and neutrals are not interchangeable, but in your specific case it will work and be safe.
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TJ (Tom) Cornish

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Re: L6-20 250v to 15a edison
« Reply #6 on: September 26, 2016, 05:32:01 pm »

i also have the DNA20k4. i use it mostly with 220V. i have made an adapter that takes the 2 hots of the L6-20 to 2 Edison so i can get 220V from 2 20a 120V lines. i know it sounds crazy.
This is not safe.  These "octopus" adapters combine neutral wires between circuits and are vulnerable to a lot of wiring errors - i.e. if one circuit is H/N reversed, you'll have a light show from your plug.  Additionally, if you happen to use two circuits on the same phase, you will overload the neutral wire in the venue, creating a significant fire hazard in the walls of the building or in your equipment wiring. 

This, IMO, is what makes the mega amps poor choices for folks who don't always have heavy power available.  You're better off with two smaller amps that can be legally split to two circuits than one 4 channel amp that needs heavy power.
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Yoel Farkas

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Re: L6-20 250v to 15a edison
« Reply #7 on: September 26, 2016, 05:50:38 pm »

This is not safe.  These "octopus" adapters combine neutral wires between circuits and are vulnerable to a lot of wiring errors - i.e. if one circuit is H/N reversed, you'll have a light show from your plug.  Additionally, if you happen to use two circuits on the same phase, you will overload the neutral wire in the venue, creating a significant fire hazard in the walls of the building or in your equipment wiring. 

This, IMO, is what makes the mega amps poor choices for folks who don't always have heavy power available.  You're better off with two smaller amps that can be legally split to two circuits than one 4 channel amp that needs heavy power.
Look at the diagram.
the Neutrals are not connected anywhere.
if one circuit is reversed it will be 120V. it will work but not full power.
if it is the same phase it will just not work. nothing will blow..
i don't think it is legal but it is safe.
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Yoel Farkas
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Rob Spence

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Re: L6-20 250v to 15a edison
« Reply #8 on: September 26, 2016, 06:58:52 pm »

I would think that the appropriate solution here is to purchase a powercon cable mount connector that will mate to the amp and make a 120v cable assembly for the amp. Messing with odd adapters is a pain and if done wrong can be dangerous.


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Stephen Kirby

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Re: L6-20 250v to 15a edison
« Reply #9 on: September 26, 2016, 07:14:40 pm »

I would think that the appropriate solution here is to purchase a powercon cable mount connector that will mate to the amp and make a 120v cable assembly for the amp. Messing with odd adapters is a pain and if done wrong can be dangerous.


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Agreed, the amp will run on 115 according to the spec sheet.  A mains cable specifically for that application will allow you to use the amp and nobody will take some oddball speciality adapter and accidentally use it in some unintended fashion.
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ProSoundWeb Community

Re: L6-20 250v to 15a edison
« Reply #9 on: September 26, 2016, 07:14:40 pm »


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